Cattle manure pyrolysis process: Kinetic and thermodynamic analysis with isoconversional methods

Yuan, Xiangwei; He, Tao; Cao, Hongliang; Yuan, Qiaoxia

doi:10.1016/j.renene.2017.02.026

Cited by 361 publications

(109 citation statements)

References 40 publications

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“…proteins, starches, lipids, sugars, etc.) different from of agro-biomass [4,43]. The first peak below 200 • C demonstrated the weight loss due to the release of inherent moisture in cattle manure.…”

Section: Discussionmentioning

confidence: 96%

“…According to the discussion above, the apparent activation energies (E a ) derived from FWO method (see Table 3) were used to calculate the thermodynamic parameters of A, ∆H, ∆G, and ∆S. As, the interactions among the constituents increases with heating rate during the pyrolysis process [4] the lowest heating rate of 10 • C/min was used for calculation of pre-exponential factors.…”

Section: Pyrolysis Thermodynamicsmentioning

confidence: 99%

“…Biomass is the only renewable carbon resource that can be directly converted into fuel [2]. Especially in the last decade it has attracted more attention as a low risk and capital required renewable energy source [3][4][5][6]. Biomass is an abundant energy resource accounting for 9% of electricity consumption in the world in 2015.…”

Section: Introductionmentioning

confidence: 99%

“…In view of above issues, there is an urgent need to develop sustainable waste management strategies to protect the environment and human health by reducing waste volume and converting waste materials into green energy and high value added products through clean thermochemical conversion technologies [16,17]. Pyrolysis is a well-known thermochemical conversion technology for waste disposal that is being developed to convert waste materials into energy and valuables, such as bio-oil, synthetic gas, and biochar products [4,18]. It is an attractive way of extracting biomass energy to produce stabilized pyrolysis oil which has potential to be used as fuels in furnaces, turbines, and diesel engines or feedstock for many chemicals; combustible syngas for power generation; and biochar to be used as soil fertilizer and green adsorbent [19].…”

Section: Introductionmentioning

confidence: 99%

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Sustainable Valorization of Animal Manure and Recycled Polyester: Co-pyrolysis Synergy

Akyürek

2019

Sustainability

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In this study sustainable valorization of cattle manure, recycled polyester, and their blend (1:1 wt.%) were examined by the thermogravimetric analysis (TGA) method. Pyrolysis tests were performed at 10, 30, and 50 °C/min heating rate from room temperature to 1000 °C under a nitrogen environment with a flow of 100 cm3/min. Kinetics of decomposition were analyzed by using Flynn–Wall–Ozawa (FWO) method. Based on activation energies and conversion points, a single region was established for recycled polyester while three regions of pyrolysis were obtained for cattle manure and their blend. Comparison between experimental and theoretical profiles indicated synergistic interactions during co-pyrolysis in the high temperature region. The apparent activation energies calculated by FWO method for cattle manure, recycled polyester. and their blend were 194.62, 254.22 and 227.21 kJ/mol, respectively. Kinetics and thermodynamic parameters, including E, ΔH, ΔG, and ΔS, have shown that cattle manure and recycled polyester blend is a remarkable feedstock for bioenergy.

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Section: Discussionmentioning

confidence: 96%

Section: Pyrolysis Thermodynamicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sustainable Valorization of Animal Manure and Recycled Polyester: Co-pyrolysis Synergy

Akyürek

2019

Sustainability

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“…Overall, the activation energy for pyrolysis varies from 115 to 293 kJ mol 21 for hydrochars, depending heavily on original biomass and HTC conditions [14]. Yuan et al performed kinetic and thermodynamic analysis of cow manure using KAS method and obtained an activation energy of 332.39 kJ mol 21 for a degree of conversion of 0.85 [15]. Often the activation energy of hydrochar is found higher than the corresponding raw feedstock.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis and carbon dioxide gasification kinetics of hydrochar produced from cow manure

Saha

McGaughy

Hasan

et al. 2018

Env Prog and Sustain Energy

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This study focuses on determining the kinetic parameters of pyrolysis and gasification of manure‐derived hydrochar. Hydrochar was first pyrolyzed in Thermogravimetric analyzer at heating rates of 5, 10, and 20°C min−1 with N2 and gasified afterwards with CO2 at 800, 900, and 1000°C for 30, 60, and 90 min. Morphology of the pyrolysis and gasified chars were analyzed with FT‐IR and scanning electron microscope (SEM). Kissinger's method was used to evaluate kinetic parameters for pyrolysis, while Arrhenius method was implemented to evaluate gasification kinetic parameters. Activation energy for pyrolysis and gasification were 211.5 ± 7.7 kJ mol−1 and 270 ± 20 kJ mol−1, respectively. FT‐IR analysis revealed that ‐OH and aliphatic C‐H groups were significantly reduced compare to raw hydrochar during gasification. A decrease of particle size and an increase of amorphous region were observed in SEM analysis, while energy‐dispersive x‐ray spectroscopy analysis revealed an increase in oxygen and carbon contents in gasified char. © 2018 American Institute of Chemical Engineers Environ Prog, 38: 154–162, 2019

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Thermal conversion behavior and nitrogen‐containing gas products evolution during co‐pyrolysis of cow manure and coal: A thermal gravimetric analyzer/differential scanning calorimetry–mass spectrometer investigation

Bai

Wang

et al. 2021

Asia-Pacific J Chem Eng

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The kinetics and thermal behaviors of cow manure (CM) and Meihuajing bituminous coal (MHJ) blending from room temperature to 950°C were investigated by thermal gravimetric analyzer (TGA) coupled with differential scanning calorimetry (DSC) and mass spectrometer (MS). TG curves show that the high heating rate accelerates thermal decomposition rate, and the position of differential thermal gravity (DTG) peaks shifts to a higher temperature. Owing to the heat transfer limitation phenomenon, the residual weight of CM is only 40.38% with the heating rate of 1°C/min in comparison with other heating rate. DSC takes more time to reach a steady state than TGA. Gaseous evolution curves of HCN and NH3 were obtained during the pyrolysis of blends based on TG–MS experiments. With the increased heating rate, the emissions increased a lot due to the secondary reaction of volatiles. The Eα of 1C1M obtained using Kissinger–Akahira–Sunose (KAS), Flynn–Wall–Ozawa (FWO), Friedman, and Kissinger methods is within 124.58–317.18, 121.97–321.11, 150.28–331.64, and 209.26 kJ/mol, respectively. The kinetic parameters calculated based on four model‐free kinetic modeling methods shows good agreement. And the thermodynamic parameters were obtained and discussed under different conversion rates. This work is greatly important to understand the co‐prolysis mechanism of CM and coal and to design the pyrolysis reactors.

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Cattle manure pyrolysis process: Kinetic and thermodynamic analysis with isoconversional methods

Cited by 361 publications

References 40 publications

Sustainable Valorization of Animal Manure and Recycled Polyester: Co-pyrolysis Synergy

Sustainable Valorization of Animal Manure and Recycled Polyester: Co-pyrolysis Synergy

Pyrolysis and carbon dioxide gasification kinetics of hydrochar produced from cow manure

Thermal conversion behavior and nitrogen‐containing gas products evolution during co‐pyrolysis of cow manure and coal: A thermal gravimetric analyzer/differential scanning calorimetry–mass spectrometer investigation

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